Machine for straining, mashing, grating, and chopping.



E. HUBERT.

MACHINE FOR STRAINING, MASHING, GRATING, AND UHOPPING.

APPLICATION FILED MAY 12, 1909.

938,766. Patented Nov. 2, 1909.

mvENTdR, EM\LHUBERT,

WW M M Attome Wrmassea EMIL HUBERT, OF BUDAPEST, AUSTRIA-HUNGARY.

MACHINE FOR STRAINING, MASI-IING, GRATING, AND CHOPPING.

Specification of Letters Patent.

Patented Nov. 2, 1909.

Application filed May 12, 1909. Serial No. 495,381.

To all whom it may concern:

Be it known that I, EMIL HUBERT, subject of the King of Hungary, and residing at Budapest, Austria-Hungary, have invented new and useful Improvements in Machines for Straining, Mashing, Grating, and Chopping, of which the following is a description.

The present invention has for its object an apparatus which, by utilizing simple means, renders it possible to effect all the operations of straining, mashing, grating and chopping which have to be carried out in the household in one and the same machine. These operations are carried out with but slight variation in the arrangement of the mechanism, very thoroughly, in a continuous operation and with constant and perfect separation of the wastes such as skins, cores and the like. All these results are attained noreover with the expenditure of but little orce.

An embodiment of the invention is illustrated by way of example in the drawing filed with my provisional specification in which Figure 1 is a longitudinal section of the apparatus with the cylinder for straining and mashing operations. Fig. 2 is a section on the line ab in Fig. 1 illustrating the method of fixing the cylinder to the frame. Fig. 3 shows the worm ready for grating, in side elevation. Fig. 1 shows the cylinder ready for chopping with the worm arranged therein. Fig. 5 illustrates a modification of the device shown in Fig. 4. Fig. 6 is a section on the line AB in Fig. 5, and Fig. 7 is an end elevation of the worm shown in Fig. 5.

The straining device consists broadly of the frame 1, provided with the fixing screw 2 which serves for fixing the entire apparatus to the table as is usual in the case of meat chopping machines. The journal 5 of the worm 4 is inserted in the bore 3 in the casting 1 and can be fixed by means of the screw 6. The worm, which can be rotated by means of the crank 7, is left-handed its pitch gradually becoming smaller away from the journal 5. The core of the worm flares conically from the journal 5 and the edges of the worm thread are turned cylindrically so that the annular space existing between the core of the worm and the edge of the thread is greatest at the journal 5, the annular surfaceconstantly decreasing away from the journal and disappearing entirely at the last convolution of the thread. The worm 41 is however continued even after this last thread as a turned conical surface. On the turned part of the casting l the perforated straining cylinder 9 is passed; at its upper part it is provided with an opening for the admis sion of the material to be strained. end directed toward the part 8 of the casting 1 the straining cylinder is provided with four holes 11 which register with four holes 12 on the part 8 and, in the manner described below serve for attaching the cylinder 9 to the casting 1. The other end of the straining cylinder 9 flares conically and this cone corresponds with that of the worm 1. As shown in Fig. 1, the cylinder 9 surrounds the worm 4:, so that the threads of the worm exactly fit the tapering end of the cylinder. The tapering end of the cylinder and the end fitted to the casting are not perforated.

Another part of the apparatus is the feed hopper 13, to the lower part of which the wire 14 is soldered. The ends of this wire 14 form a fork 15, 15 which on the one hand fixes the hopper 13 and on the other hand the straining cylinder into the casting 1 merely by its insertion in the holes 11, 11 in the straining cylinder and in the holes in the casting which register therewith, as shown in Figs. 1 and 2.

The discharge channel 16 is suspended from the end of the cylinder 9 its other end resting on the receptacle 17 for the strained material such for example as tomatoes, potatoes, chestnuts and so forth; the channel serves for carrying ofi the waste such as skin, pips and the like.

The apparatus acts in the following manner :-The material such as potatoes, apples, spinach, beans, tomatoes, turnips, chestnuts, sugar, coifee, pepper and the like which is to be strained, sifted or mashed, is carried through the hopper 13 and the worm 1 is rotated by means of the crank or handle 7. The worm forces the material helically forward in the cylinder 9: in the meantime the material is compressed laterally by the worm threads which constantly become narrower: this pressure is still further increased owing to the fact that the annular chamber existing between the worm and the cylinder 9 gradually becomes narrower. The material is, therefore, pressed with great force against the perforated cylinder 9 so that the soft portions are forced through the per- G11 its forations and flow or fall into a receptacle or plate 17 arranged beneath. the machine. The constituents which do not pass through the perforations, such as skins, shells, pips and the like are forced forward on the inner face of the cylinder 9 until they pass through the slot between the cylinder 9 and the conical end of the worm 4, which may be made as narrow as necessary, on leaving which they fall as waste completely freed from material of any value and quite dry into the discharge channel 16.

The apparatus may be very readily taken apart for cleaning: The screw 6 is loosened, the crank 7 removed from the journal 5 of the worm 4 and the worm withdrawn from the cylinder 9. Then the hopper 13 is like Wise removed by withdrawing the fork 15 of the wire 14 from the holes 11, 11 and 12, 12. The cylinder 9 can then also be removed from the part 8 and the apparatus taken completely apart.

Fig. 3 shows the worm 4 adapted for grating with the grating cylinder 18 arranged thereon. If it is desired to grate. dry bread, nuts, almonds, chocolate or the like the straining cylinder 9 is entirely removed and a grating cylinder 18 is fixed to the worm 4 in any convenient manner so that this cylinder rotates with the worm. This cylinder 18 is perforated like the cylinder of the grating devices heretofore used. In this case the apparatus consists of the casting 1, the

' feeding hopper 13 and the worm 4 provided with the grating cylinder. As soon as the worm 4 is rotated together with the cylinder 18 and the material to be grated placed in the hopper 13 and ressed down, grating can be carried out with this apparatus in the same manner as with the known devices used for this purpose.

Fig. 4 illustrates the apparatus ready for chopping. In this case the straining cylinder 9 is replaced by the cylinder 19 which is fixed to the casting by the fork 15 of the hopper 13, like the cylinder 9. This cylinder 19 is provided with the charging opening 20 and with recesses 21, 21 on its periphery. These recesses are preferably helical in form. The cylinder 22, the entire surface of which is provided with perforations 23 isexactly fitted to the cylinder 19: the cylinder 22, which is outwardly flared at its rear end, can be turned upon the cylinder 19. In order that the worm 4 located in the cylinder 19 may rotate the cylinder 22 with it, a pin 24 is passed through the registering openings in the cylinder 22 and the tapering end of the worm 4. The material to be chopped, such as meat, is carried through the hopper 13, the worm 4 rotated by means of the handle? whereupon the chopping operation is efiected in the following manner: The worm 4 presses the material forward in the manner already described and presses it with great force against the periphery of thecylinder. During the rotation the perforations 23 in the rotating cylinder 22 and the recesses 21 in the stationary the openings 23 separate from the recesses .21, however, and consequently cut off the material which has been caused to protrude.

This is repeated continuously during the rotation so that the material leaves the apparatus through the perforations 23 111 the cylinder 22 in a very small and finely di-.

vided state. The tough parts of the material such as skin or the like which are uneatable do not leave the cylinder 19 here but travel over its inner face and issue at the tapered end of the worm.

In the embodiment of the invention illustrated in Figs. 5 to 7, the rotatable cutting cylinder which surrounds the stationary straining cylinder is replaced by knives arranged between rings 25 and adapted to be rotated with the worm arranged inside the stationary cylinder. A cylinder 19 is arranged around the worm 4 in such a manner that it cannot rotate. The rotatable cylinder 22 is replaced by knives 26 which are clamped between rings 25. The knives consist of pieces of fiat iron: it is not necessary to sharpen these knives as they merely have to exert a shearing action. The rings .25 and knives 26 are caused to rotate owing to the fact that some ofthe blades are extended over the ring 25 situated on the left the waste from the valuable material and large output owing to its continuous operation. 7

I claim as'my 1nvent1on:

1. In a machine for straining, mashing,

grating and chopping food, having a worm the thread of which is externally cylindrical and becomes gradually shallower and of shorter pitch toward the outlet end of the machine, the combination of a perforated cylinder to surround said worm, a detachable hopper to said cylinder and means for rotating the said worm within the said cylinder, a flared conicalend to the said worm and a similarly shaped non-perforated end to the cylinder.

t Worm, a detachable hopper to said cylinder the thread of which is externally cylindrical and becomes gradually shallower and of shorter pitch toward the outlet end of the machine, the combination of a perforated cylinder having a non-perforated flared end to surround said worm, a detachable hopper to said cylinder and means for rotating the said worm within the cylinder, a tray at the rear of the cylinder to receive the residue coming from the cylinder and a receptacle underneath the said cylinder to receive the treated substance.

3. In a machine for straining, mashing, grating and chopping food, having a worm the thread of which is externally cylindrical and gradually shallower and of shorter pitch toward the outlet end of the machine, the combination of a perforated cylinder having a non-perforated flared end to surround said and means for rotating the said worm within the sa1d cylinder, a second perforated cylinder to move on said first mentioned one L and means for coupling the same to the worm substantially as described.

4. In a machine for straining, mashing, grating and chopping food, having a Worm the thread of which is externally cylindrical and becomes gradually shallower and of shorter pitch toward the outlet end of the machine, the combination of a perforated cylinder having a non-perforated flared end to surround said worm, a detachable hopper to said cylinder a wire attached to the lower end of said hopper and having its forward ends bent downwardly, a front frame plate having holes to receive said wire ends, said Wire ends being adapted to pass through corresponding holes in the said perforated cylinder substantially as described.

In testimony whereof I afiix my signature in the presence of two Witnesses.

EMIL HUBERT.

Witnesses: v

JOSEPH WIRKMANN, BnNI GRUNWALD. 

